Improvement in thrashing-machines



UNITED STATES PATENT OEErcE.

PABLEY UITON AND JACOB B. LOBDELL, OF BATTLE CREEK, MICHIGAN.

IMPROVEMENT IN THRASHING-MACHINES.

Specification forming part of Letters Patent No. 121,220, dated November21, 1871.

To all whom it may concern:

Be it known that we, PARLEY UPToN and J AGOB B. LOBDELL, of BattleCreek, in the county of Calhoun and in the State of Michigan, haveinvented certain new and useful Improvements in Thrashing-Machines, anddo hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawing andto the letters of reference marked thereon making a part of thisspecication.

The nature of our invention consists in the construction and mode ofoperating the sieves, bottom board to the shoe, and the board thatconveys the tailings to the elevator.

In order to enable others skilled in the art to which our inventionappertains to make and use the same, we will now proceed to describe itsconstruction and operation, referring to the anneX- ed drawing, inwhich- Figure lis a side elevation, part in section; and Fig. 2 is abottom view. Fig. 3 is a side view of the bottom board of the shoe.

A represents the fan, placed on the shaft a, upon the end of which is apinion, b, that gears with a cog-wheel, B. Cn the outside of this Wheelis a wrist-pin, e, upon which is attached the pitman C. The other end ofthispitman is attached or pivoted to a lever, cl, upon the end of ashaft, h, which passes through the machine. h

The portion of the shaft h which is inside of the machine is square, andtwo arms, ff, project upward from the same. The upper ends of the arms ff are pivoted to the rear end of the sieve D, the front end of whichrests upon rollers i z', as shown in Fig. l. To the rear edge, and abovethe sieve D, is attached the rake E, which moves back and forth with thesieves. Two other smaller arms, g, extend downward from the shaft h, andare attached to the rear lower end ofthe board G in the bottom of theshoe. The upper front end of this board also rests upon smallfriction-rollers i z'. The shaft h, by the gearing above described,obtains a rocking motion, which gives to the sieves D and board G therequired reciprocating motion. The amount of this motion may beregulated by changing the pitlnan C further out or in on the lever d,said lever being for this purpose provided with a series of holes, asshown in Fig. 1. Under the front end of the frame in which the sievesmove is formed or attached the spout H, the bottom board I of whichconveys the tailings to the elevator, and is corrugated or toothed, asshown in Fig. 3, and moves from end to end in the spout upon guides 7ck. This motion of the bottom board I is contributed from the board G bymeans of a rod, m, connecting said board G with a bent lever, p, pivotedon the lower edge of the shoe, and another rod, a, connecting the otherend of said lever with the bottom board I. The amount of such motion maybe regulated by changing the point of connection between the lever p androd a. f

Having thus fully described our inventiomwhat we claim as new, anddesire to secure by Letters Patent, is-

1. The arrangement of the rock-shaft h, arms f f and g g, pinion b,Wheel B, pitman C, and lever d, with the sieve D and board G, allsubstantially as shown and described.

2. The combination of the board G, connecting-rods m n, bent lever p,and bottom board I, substantially as and for the purposes herein setforth.

In testimony that we claim the foregoing We have hereunto set our` handsthis 11th day of July, 1870.

PARLEY UITON. JACOB B. LOBDELL.

Witnesses C. L. EVERT, .p A. N. MARR. (159)

